Bonds g's are super comfy, but if you want something thinner and a bit more va va va voom, I love Victoria's Secret.

They have pretty microfiber ones, and my other fave is 'the Lacie' - you can get 3 or 5 for $25 US I think. Shipping can be exxy but if you do a big order or go in with a friend it's worth it. They also have massive twice-yearly sales that are worth watching out for!